Captured a video that demonstrates the slowness with the goto anything overlay. In the clip I'm scrolling the text both with and without the goto overlay showing, but just scrolling the goto anything overlay is also choppy.

Indeed, changing to the default theme there's still a visible slowdown with the goto panel visible but not as bad with the theme I usually use. Although if OpenGL is now used for pushing pixels, how large of an effort would it be to do the blending with OpenGL too? (I wouldn't count this as a high priority item btw, just curious)

On my machine same situation, after back to regular theme from Soda light ST2 cursor is much faster. Of course with Soda it is now almost OK, but with normal theme it is much faster. It is espacially visible with TextExpander.

about the cinema display with an air: I have the same setup but only use the cinema display about half of the time. Does it make sense to enable the preference permanently? What happens when connect and disconnect the external screen?

There shouldn't be any harm in enabling gpu_window_buffer all the time, barring any opengl driver issues. There's a possibility it may have a negative effect on battery life, but assuming that OS X is going to be using the gpu for window compositing in any case, it may actually improve it. On the topic of battery life, the best way to extend that within Sublime Text is changing the caret_style to a non-blinking one.

Am I the only one experiencing opposite/no effect?Enabling gpu_window_buffer adds significant lag for typing while not improving scrolling/repainting speed at all on default theme comparing with previous build.And yeah, goto anything in Soda theme is slow as hell on both settings